Finding the Fourth Proportional to 699,017,607.41, 964,664,749.45 and 381,498,218.75
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Solution
The fourth proportional to 699,017,607.41, 964,664,749.45 and 381,498,218.75 is: 526,478,703.41
Step by Step Solution
- Step 1: Write the proportion equation
699,017,607.41 : 964,664,749.45 = 381,498,218.75 : x - Step 2: Convert to fraction form
699,017,607.41/964,664,749.45 = 381,498,218.75/x - Step 3: Cross multiply
699,017,607.41x = 964,664,749.45 × 381,498,218.75 - Step 4: Simplify right side
699,017,607.41x = 368,017,883,608,978,560 - Step 5: Solve for x
x = 368,017,883,608,978,560/699,017,607.41 - Step 6: Final answer
x = 526,478,703.41
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.